const titleConfig = {
  "ql-bold": "加粗",
  "ql-color": "颜色",
  "ql-font": "字体",
  "ql-code": "插入代码",
  "ql-italic": "斜体",
  "ql-link": "添加链接",
  "ql-background": "背景颜色",
  "ql-size": "字体大小",
  "ql-strike": "删除线",
  "ql-script": "上标/下标",
  "ql-underline": "下划线",
  "ql-blockquote": "引用",
  "ql-header": "标题",
  "ql-indent": "缩进",
  "ql-list": "列表",
  "ql-align": "文本对齐",
  "ql-direction": "文本方向",
  "ql-code-block": "代码块",
  "ql-formula": "公式",
  "ql-image": "图片",
  "ql-video": "视频",
  "ql-clean": "清除字体样式"
};
export function addQuillTitle() {
  const oToolBar = document.querySelector(".ql-toolbar"),
    aButton = oToolBar.querySelectorAll("button"),
    aSelect = oToolBar.querySelectorAll("select");
  aButton.forEach(function(item) {
    if (item.className === "ql-script") {
      item.value === "sub" ? (item.title = "下标") : (item.title = "上标");
    } else if (item.className === "ql-indent") {
      item.value === "+1"
        ? (item.title = "向右缩进")
        : (item.title = "向左缩进");
    } else {
      item.title = titleConfig[item.classList[0]];
    }
  });
  aSelect.forEach(function(item) {
    item.parentNode.title = titleConfig[item.classList[0]];
  });
}
